Adding-machine.



L. W. YAGGY.

ADDING b/IMJHINI-I. APPLICATION FILED JULY 15. 1911. xmuzwzn MAR. 11, 1914.

1,122,052 Patented Bed. 22, 1914.

9 SHEETS-SHEET 1.

nuwtoz 9 SHEETSSHEET 2.

Patented Dec.22,1914.

L. W. YAGGY.

I ADDING MACHINE. APPLICATION mum JULY15' 1911. RENEWED MAB.11,1914.

lmvtwwmo L. W. YAGGY.

ADDING MACHINE.

L. W. Y'AGGY.

ADDING MACHINE. APPLICATION TILED JULY 15 1911. npunwzn 111111.11, 1914.

1,122,052, Patented Dec. 22, 1914.

9 SHEETS-SHEET 41 L. W. YAGGY.

ADDING MACHINE.

APPLICATION FILED JULY 15,1911. RENEWED MAR. 11. 1914.

L. W. YAGGY.

ADDING MACHINE.

APPLICATION PILED JULY 15, 1911 RENEWED MAR. 11, 1914. 1,122,052.

Patented Dec. 22, 1914.

9 SHEETS SHEET 6 L. W. YAGGY.

-ADDING MACHINE.

APPLICATION FILED JULY 15, 1911. RENEWED MAR.11, 1914.

Patented Dec. 22, 1914.

9 SHEETS-SHEET 7.

L. W. YAGGY.

ADDING MACHINE.

APPLICATION FILED JULY 15. 1911. RENEWED 111111 11, 1914.

1,122,052. Patented Dec. 22, 1914. QSHEETS-SHEETB.

J62 Z9! 1 1 167 1/7 J85 J93 1/6 L. W. YAGGY.

ADDING MACHINE. APPLICATION FILED JULY 15, 1911. RENEWED MAR. 11, 1914.

1,122,052. 7 Patented Dec.22,1914.

9 BHEETS SHEET 9'.

55 f-Jj 91 iii 5 '6:

58 r 40- 7%" E s I I UNITED STATES PATENT OFFICE.

LEVI w. YAGGY, or NEW YORK, N. Y., AssIeNoa 'ro WALTER E. YAGGY.

ADDIN -MACHINE Specification of Letters Patent. Patqnted Dec, 22, 1914,

Application filed July 15, 1911, Serial No. 638,669. Renewed March 11, 1914. Serial in. 824,063.

lily invention relates to adding machines.

Its object isto provide a 'machine so smalland compact that it may readily be placed and used upon the book or paper bearing the data, may addby the column, and yet contain all the mechanism necessary to accurately perform the work of addition and also print the result.

To this end my invention comprises the combination of features, parts anddetails set forth in the appended claims. -'A powertransmitting and motion convertingmechzu nism, a counter-wheel mechanism and controlling features, and a printing mechanism arearranged in separable sections in line upon a skeleton-base through which the printing wheels may print. The unit keybars, are arranged in transverse groups of the power transmitting device (in this case a slide-bar) and each movement gives an equivalent impulse to a pinion and, through a pawl carried by the pinion, to a ratchet and attached gear. A permanent stop is provided to determine the impulse given by the 9 key-bar, but forea'ch of the other impulses is provided a movable stop operated by the key-bar, which catches the rotary pawl of the ratchet and gear and stops the movement to give exactly the necessary rotation to the counter-wheel and printing wheel gear. In short, the parts are so. relatedthat the impulses are first broadly measured and then specifically determined enabling one then to instantlv'start and suddenly stop and quickly return the parts without injury or inaccuracy.

The counter-wheels and the printing wheels operate synchronously and the counter-wheels are controlled by mechanism operated individually by the movement. of a carriage, that controlling mechanism being in correlation with a controlling mechanism of the printing-wheels. 1

For each counter-wheel there is a corre-. sponding coupling-wheel which may engage with specially provided'tee'th of two of the counter-wheels and. cause inter-action, and

for each printing-wheel there is an impression lever or a printing-lever and a corresponding setting-lever for each'of the impression or printing-levers, so that as the carriage moves from onedenomination to another the counter-wheel controlling mechanism will .be set and will in turn operate the setting-levers so that the printing-levers will be in position to receive the blow of a handplung er which operates in the rear of the machine-and all printing-wheels corresponding to the counter-wheels which have been passed or which have been operated will-make an impression or imprint of the total when the hand plunger is struck.

In the accompzzjiying drawings, Figure 1 is a plan view ith the casing removed; Fig. 2 is an elevation of the power-transmitting device; Fig. 3 is a longitudinal section with the casing in place; Figs. 4, 5, 6 and 7 are details of the connections immediately operated by the key-bars; Fig. 8 is a partial side-elevation of a detail, a standard through whifi the stop-rods play; Figs. 9, 10, 11 are details of the pinion, ratchet and driving gear mechanism; Fig. 12 is an elevation of the zero-return ng side opposite to that of Fig. 2; Fig. 13 is vertical section through the counter-wheel and. printingwheel division of the machine; Fig. 14 is a detail showing another position of the coupling-wheel and the printing-lever mechanism shown in Fig. 13; Fig. 15 is a partial plan view of the counter-wheels and their" controlling mechanism: Fig. 16 is a detail plan of the ,carriage: Fig. 17 is a side elevation of the master-wheel and shifting groove or collar; Fig. 18 is a detail elevation of the pawls controlling the carriage; Fig. 19 is a detail of the clutches and pinion driving the zeroreturning mechanism; Fig. 20 is a rear elev 'ion: Fig. 21 is a detail of the printing plunger; Fig. 22 is a detail plan of the counter-wheel, printing-wheels and associated gears: Fig. 23 is a bottom plan of the grated portion of the base; Fig. 24 is a section through Fig. 23; Fig. 25 is a'transverse section of the bobbins; Fig. 26 is a detail of the bobbins ratchet mechanism. i

1 is the base-plate of the machine which may rest immediately upon the book or paper containing the data.- The base-plate is, as illustrated, of skeleton form for pur poses to be hereinafter set forth (Fig. .3).

2 is the front, 3 the rear end, and 4 the inclined top of a casing which, preferably, entirely 'incloses-the mechanism, except ng for the projecting keyrba'rs and a printing lever," and which is cut away, as indicated, to permit a reading of the counter wheels.

A flanged plate 5 on one side and a similar plate 6 on the other side are secu'rcdto the base-plate and form-vertical supports and bearings, the platef6 being cut away at 7,

key-bars. Intransverse 'line with the standards '13 is a series of shorterstandards 15, likewise secured to the plate 10. Each of these standards 13, 15 is perforated to receive rocker-rods 16, 17, 1Sofdifi'erent- -lengths, the rocker-rods having, respectively, curved bent ends 19, 20, 21, passing through perforations in the extension- 11,

- andfeach of the i'ocker-rods having, re-

spectirel'y, downwardly bent parts 22, 23, 24 at the opposite end.- Each rocker-rod'reciprocates a stop-rod 25, there being, in illustrated form of my machine, eight of these stop-rods. 4 I

26, 27 are standards secured to the base of the machine, perforated-"at the top to receive the ends of the stoprod's 25, and serving also as hearing; lates for parts to be hereinafter described? The ninth stop may, of course, be permanent and is shown at :28 on the side of thestandard 26. 29, 29 represent the lie /bars, each of which has a spring-return 30.

31 repiesents a 'partstruck up from the shank of each key-bar, leaving an opening 32 in the key-bar.

33 is a stop on the side of each standard 15. The opening 32, the projection .31and the stop 33 regulate the actionof each of the stoprods 25. .That is to.say, when a key-. ha] 29 is depressed it will force to one side the downwardly bent part, 22, 23, or 24,

which rngagcs with that key-banturning the stop-rod so that the forward upwardly bent part, 19, 20, or 21 Will be oscillated plate 34, each plate being pivotedon the end inthe standards 5 and 6. Each of two of the plates 34 has a series of perforations 35, to better enable a ready operation of the bottom edge of a key-bg u a platescbfi cause of the forward l'o c ationof the other plate Ifind it expedient to provide a "modification, soon to be described, forthe 1 and 2' keybans. Thej foot of akey-bar lies across the front edge of each plate 34. This arrangement permits a pivot at one side of each end of the plate while the-plate is operated by the pressure'tf the fkey-bar on the edge of the'opposite side of the plate. The foot of'th key-bar taking. over the edge of the plate 34 at the perforation 35 gives an easy' and almost frietionlessaction. The foot of the key- 'hai' turning 'th'us at the perforated point moves in anar'c so that a quick',"constan't and even movement 'is given to the'plate (Figs. 4'7).' In Fig. 5

I have 'shown modifications ofistruc ture which also carry out this idea. For key 1 I provide a loop-extension3fi' andffor key 2 a, similar extension of "different form "3?, to

give the forward keysj tlrat is, those nearest the transmitting devi'e s," 'a somewhat more delayed action. Each plate is' "spring pressed as shown at 38. i

Each plate has a rocker-arm at one end, and, as all of these are of-difi'erent lengths, I have indicated them by,the different" nuthe slot 48. The slots- 49 and 50 receive,

respectively, the pins 42 and 43, while the pin 44 takes against the head51'of the slide bar.

A sector-gear 53 is borne byanarm 54 journaled on a stub-shaft at.55 to the side plate 12. The sector-arm"*54 bears at the bottom a pin 56 which supports the forward end ofthe slide-bar 46, serving also as a connecting pin through which the slide-bar operates the sector-arm.and its gear segment.-

mer'als 39,40, 41. Each -ro'cke1j-'a'rm has 9.

57 is a mutilated pinion to be operated by the sector-gear 53. The pinion 57 has a hub 58 which serves as a collar to separate the pinion from the standard 26, and given longer heating to the pinion (Figs. 1, 2, 9,. 10 and 11}.

A disk witha ratchet ring 59 has securedto it a-gear-ring 60, and the gear-ring, the

intermediate ratchet, and the inner pinion are all borne by a stub shaft 61 which screws into the side of the standard 26. A pawlpin 62, which engages the ratchet 59, projects'from a head (53, on the outer end of an arm 64, which is pivoted at 65 to the mutilated pinion 57.

. 66 is a spring-return, secured to the pawl i at one end to a pin 67 on the arm 64 and,

in this example, at the other end projecting from the pinion.

68 is a stop-arm for the pawl to prevent it from riding too high on the ratchet, and 69 is a stop-pin projecting from the pinion to fore, provided with a cushion. The head is hollow as indicated ,at 72, and carries a spring '(3 against which abuts a plunger 74. As has been previously indicated, the

slide-bar 46 is suspended and guided at one end by the slot 48 and the pin 52. At the other end it is suspended and guided by the pin 56 on the arm 54 of the sector-gear 53. This pin serves also as the connecting means by which when the slide-bar 46 is reciprocated the sector-gear 53 -will be oscillated. The pins 42, 43 and 44 of the rocker-arms 39, 40 and 41-lie, as indicated, respectively,

in the slots 49 and 50 and against the head 51 of the slide-bar 46. The rocker-arms 39, 40 and 41 are of different lengths because the movement of each is different. The slots in the Slide-bar 46 are of sufficient size or length to enable, for example, the rockerarm .39, nearest the front, to operate the slide-bar -16 without affecting the succeeding or'next rocker-arm 40, while the end pin 44 of the rocker-arm 41 may push back the slide-bar without having any effect upon the other two pins 42 and 43 and their crank or rocker-arms 39 and 4:0 and consequently the corresponding pivoted plate 34. It is the function of the sector-gear 53 to sweep around the mutilated pinion 57 in accordance with the extent of movement given the slide-bar 4-6 which, of course, is dependent upon which of the plates 34 is rocked by the operation of a key-bar 29 and which of the rocker-arms 39, 40, 41, that is, the shortest, the next, or the longest. one, is operated.

'The turning of the mutilated pinion .57, of-

course, carrieswith it through the pawlpin62 the-ratchet 59 and the gear-ring 60, the gear ring then engaging the gear which operates the counter wheels and other parts to be hereinafter described. .It is the func- I hanging of the pawl.

tion of the pawl-head 63 to strike against the selected stop-rod 25 which has been thrown out by the same movement of the key-bar which has operated the slide-bar 46 and the segment sector-gear 53. On the return sweep, as stated, the pin 69 strikes the pin 70 so'as to insure an accurate replacement of the parts. The specific construction of'the ratchet disk and thegearring .provides a light and yet strong. me chanical movement, peculiarly fitted to the work to be performed, where all the power transmission is here'converted, and the sudden stops are necessary for precision. It may be observed that in common with marry other features of this machine the parts of this operative mechanism may be variously arranged. For example, the stop 69, the projection for the spring-return and similar features'may be made integral with the mntilated pinion. The distinctivepurpose of this arrangement of the pawl on the mutilated pinion T shthat when the sector-gear 53 operates the nuilated pinion 57 the action of the pawl 62 in relation to the center ofmovement shall be such that the-tendency will be to draw the pawl pin 62 into the corresponding tooth of the ratchet 59 and thus prevent any possibility of the pawl leaping forward or missing the tooth for which it is intended. This precaution is necessary. because of the sudden stoppage 0f the mechanism as indicated. In other words, the center of force exerted bears such a re lation to the pawl that, no matter how it is operated or how it isstopped or how easily but vigorously the force is applied, the tendency is to draw in the pawl towardthe center 6f motion instead. of giving it a ce'ntrifugal action or throwing i t away from the center of action. Ordinarily, in any movement similar to this, the centrifugal tendency is to throw out the pawl fromits engaging position. In this case the very difficulties of sudden moving and sudden stopping are made advantages in securing an accurate and positive engagement of the pawl with the teeth of the mutilated pinion,

because the force exerted gives a centripetal instead of -a centrifugal effect. The arrangement illustrated also enables another accurate action. The pawl-pin" 62 on the return movement must stop precisely at the determined point, and, preferably,-just rising from or partly lit-ted out of the toothspace so that the next operation may take place instantly and without any lagging or 75 and 76 are side plates screwed to the base plate 1 of the machine and serving as bearing and journal plates for the counting and printing devices.

7 7 is a bracket which is secured to- (itmay be integral with) the side plate 75.

. s h h ftpa nz hrou h e p nin zero.

' of a wheel may pass without contact or en? in the plate 75 and-journaled at one endin the plate 76 and at the other end in the through a sleeve 81 is a master wheel 82, having its teeth beveled at each side as in' dicated, so that it may readily be moved across a line of center gear'wheels 83. Each of the center gear wheels-83 meshes with the teeth 84 on the, side of a counter-wheel 85 and with a gear-ring 86 on the side of each of a series of printing Wheels 87 (Figs. 1, 2, 3,.13, 15 1s, 22). v

Each centerv gear-wheel is borne by a separate .hub 88 turning on'a shaft 89 journaled in thev side plates 75 and 76, and mounted on the hubs 88 are a series of comparatively small mutilated or interrupted gears 90, which, as hereinafterdescribed, are the medium through which the counter wheels and printing Each counter wheel has on'the side opposite the teeth 94 a 'disk bearing two teeth. 91, the space between the two teeth being immediately opposite the figure 1. The teeth 84 and the teeth 91 have just sufiicient clearance to pass each other without contact. That is to say, the space between the wheels is such that the teeth 84 on one side gagement, the teeth" 91 on the opposite and facing side of the adjacent wheel.

A set of spur-wheels 92, which, because of their function, are termed coupling-wheels, and a single. tooth-sector 93 at the units end, liein front of the counter-wheels. Each wheel 92 has'alternating teeth of different widths, 94, 95. The comparatively narrow teeth 94' can enter the space between two of the counter-wheels, but the wider teeth 95 cannot enter that space. Therefore, the wheels 92 are locked until the space between the two teeth 91- come into register with a wide tooth 95.. This registry is occasioned by the upper of the teeth 91 contacting with the narrow tooth of the coupling-wheel. The wide tooth entering the space makes a connection between the previously moved counter-wheel and thesucceeding 'counterwheel of a.higher denomination just as the number 9 is reached, so that the continued movement of the first moved wheel of the lower denomination will carryover the wheel of the next denomination, that is,

in the illustrated form, the wheel to the left.

wheels brought to' '1'02 and103 semi-{asset machine in such position that when-any of the coupling- "wheels 92 is moved forward onawayfrom the counter wheel one ot-the wide teeth of' the coupling-wheel will pass' in between 'these two rods so as" to'hold' the wheel against movement while in that position. v

The cam-slot 98, as illustrated, has a dwell at each of the positions,'top'ands bottom,

' slid along',and the effect is completed by the action of the parts which connectth'is controlling mechanisn'if of the counter-wheels with the controlling mechanism'ofthe'printing levers, which will be more fully 'set forth after the printing mechanism is described.

VA shaft 104 is journaledy'at 9 1 .1 end in the side plate 75 'filldiilf'flllfi other end, for reasons which will appear, ina bracket-arm 105 extending-put from the s'idefplate 76. On this'shaft is sleeved,'as indicated,-fat 106, a, carriage 107 having various device's for controlling the action "of the counter-wheels braces this groove of lies!"between thesecoL- lars so that when the carriage is moved the master-wheel 82 will'be moved, its specially formed teeth readily passing through the teeth of the center gears which operate the counter-wheels and the printing-wheels.

The curved head of the carriage 1,07 "as'an "inset piece with a beveledfpi0j6ction f109,

and above this andex t'endin'g out to one side of the head of'the carriage a projection 111 to whichsis-pi'voted at 112 a pairof spring-pressed pawls "113, 1145 (Figs, 15 and 1S).

A pointer 115 projects from the carriage 107 and is so placed that its bent end may lie immediately in front of any selected counter-wheel. An arm 116, extending from one side of the carriage 107, provides an attaching point for a spring 117jwhich tendsto. draw thecarriage and its parts over to the right. On the sleeve 106 is a' pin 118 which, as will be hereinaften'desci'ihed,performs a function when the spring 117 sweeps the carriage over to the un t side.

Two bracket arms '119and 120'project 1 from opposite sides of the.machine and carry a rack-bar 121 secured to them. Above and. lying on'the rack-bar 121.is a similar rack-bar'122, slotted at 123 and 12% and guided by pins 125, 126 which project up from the lower rack-bar. An arm 127 is secured to the upper rack-bar 122 (Figs. 2, 3, 12, 15). It-iaoperated by a rock-lever 128 having a spring torsion'connection at 129. The rock-lever 128 has a bent end- 130 with a roller head 131, which lies beneath the horizontal plate of a pivoted frame 132, operated by a finger-bar 133 (Figs. 1, 3, 12). Each time the finger-bar 133 is depressed the rock-lever 128 will move the upper rack-bar 122 one step to the left. The pawl 114 will carry back the carriage, the attached pointer and the master 102 and 103, so that-the wheel-of lower. de-

nomination may not operate.

In the use of the machine the printing operation may follow the addition ornot. It is, therefore, expedient to now-describe the parts for returning the counter-wheels and the printing wheels to zero.

A series of mutilated gears 134 mesh with the mutilated gears 90 of each center gearwheel. The mutilated gears are .twentyteeth wheels with three of the teeth omitted. The gears 134 turn with a shaft 135 on which they are firmly mounted and" which projects from the side of the machine and bears on its end a pinion 136. The pinion is pressedin by a spring 137 so that a clutch member 138 on the pinion may readily e'ngage a clutch member 139 on a cam-hub 140 on the end of the shaft 137. The cam-hub 140 has a cam-disk 141 integral with it or secured to it. The disk has a depressed are 142 and on its side a projection 143 with-a cut or recess 144 in its inner face for a purpose to be hereinafter described (Figs. 12,

A bell-crank lever 145 is mountedupon a shaft 146 projecting from. the side of the machine and has about it a springfconnection 147 and in its hub a recess 148 receiving a pin 149'on the shaft, for a purpose .to be hereinafter described (Figs. 1, 3,12,;20);

The operating arm of the bell-crank lever has a pin 150 to serve as a stop by strikmg against the projection 143 whenthe parts are returned after operation, the cut or recess 144 in the projection 143 permitting the pin 150 to pass the projection on the initial movement or operation: Th'e'curved arm of the bellcrank lever 145 has a round head 151 which takes into a corresponding recess in a rock-arm 152 pivoted at 153 to the projecting end of the shaft 100 and having a downwardly extending member 154 which, when the bell-crank lever has been op'eratpd to turn the shaft 100 and carry back all the coupling-wheels 92, will lie in front of a projection on the inner face of a spring catch strip 155 secured to the side of the machine and serving as a locking device for the coupling wheels. The spring strip, as more fully described hereinafter, is released by the action of the pin 118 when the carriage 107 is brought over to that side of the machine by the action ofits released spring. I

On the inner side of the cam-disk 1'41 and secured to the-operating arm of the bellcrank lever is an arm 156 which, by means of a loosely pivoted pawl 157, operates to release certain springs to behereinafter described.

The pinion 136 is engaged by a gear-sector 158 on the end of .an arm 159 pivoted at 160 to a stub-shaft in the side plate of the machine. The arm 159 is connected at 161 with a vertical finger-bar 162.. Two springs, 163 and 164, serve, respectively, to restore to their normal position the bellcrank lever and the sector arm.

A bar 165 lies across the machine just above the carriage 107. One end'is pivoted upon the shaft 104 by a bent extension 166 and the other end is pivoted upon the other end of shaft 104by a bent arm 167 whose lower bent point lies in a slot 168 in the arm 159. The bar 165 is cut away uponits face adjacent the counter wheels as indicated'at 169so that it may not interfere with. the action of the pawls 113, 114 (Fig. 1).

On one side of each of the wheels 83 is a pin170 which takes into a notch 171 in an arm 172 the several arms depending from and being firmly mountedupon the shaft 146, the purpose being to lock the wheels when they have been returned to zero. The rotation of the shaft 149 fres thearms 172 froin the pins 170 (Fig. 13). While the locking-arms must yield, they must not yield so far as to give any chance ,for the pin 170 to throw. back the arm too ion in so that its clutch member138 at once engages the clutch member 139. The mutilate gears 134 begin to rotate as soon as the c utch members engage. The disk'141 also turns in the direction of the arrow and the cam-face 142 presses on the operating arm of the bell-crank lever 145 so that the curved arm of the bell-crank lever rises and 4:0 ried back' jby its-spring, returning the bar .swings the rock-arm 152 across the projection on the inside of the spring-catch 155 (against which, it normally lies) into engagement \vith'ztheprojection of the springcatch. The effect of the movement of the arm 152 is to partially rotate the shaft 100 and the tu be or shaft": carrying the camlevers and t pping the coupling-wheels. All

- the finger-bar 162, the springs 163, 164 return the parts totheir normal position in an"obvious manner?" In the o eration of these parts, as previously in 'cated, the

bar 165 plays it part. As thesector-arm 159 rises the point of the arm 167 of the bar 165 rides down the slot 168 in the arm-158. Just as the" upward'swe'ep' of the sector-is concluded the: point of thearm 167 reaches" the bottom of the slot 168 and 'turnsback' the arm 16.7 and throws-in the bar 165,

pushing back the pawls, 113, 114', and releasing the '-carriage-;107-. so that its springsw'eeps it over side ready for.

another operation; while, incidentally, the pm 118 'strikes --the" s'pring-strip catch 155, forcingit out and-releasing the member 154 of" the bell-crank \lever so .;that its spring may return it to-normaljposition; --Immediately, as indicated, the sector-arm is car-' 165 to its first position so that the pawls 113, 114 againcome into play to hold and governthecarria'ge 107.

The printing-wheels 87 are carried by a series of printing or impression levers 172,

each wheel havinga short shaft 173 jouriialcd in the adjacent lever, and each lever being-pivoted-on alshaft 174. The upper part of each lever 172 is drawn up 'normally by a spring 175. Across the machine runs a rod or bar 176 which serves as a stop forthe several levers (Figs. 3, 12, 13, 1.4, 20 26). a

Pivoted to each lever172 at 177 is a lever substantially a bell-crank lever, 178.- One end of each of these setting-levers 178 has a hook-shaped top 179, an opposite crotch 180, and below the hook portionla fulcrum projection 181. The opposite or. rear end is tied hv. a spring 182 to the ham :1 of the corresponding printing-lever 1'72. The outer end of the lever 178 is beveled tn fit against a correspondingly shaped fiat spr ng 183, all of the springs being secured to a plate 181 lVhen the pressure isremovedfrom extending acrossthe machine, the plate 184 carrying also a guardeplate 185 which protectsthe' projecting ends of the flat springs.

Thehub of each of the mutilated gears 90 and thecenter gear-wheels bears a pin 186 which, as soon as the machine begins to operate, presses upon the fulcrum projection 181 and forces back the setting lever 178 so that the crotch" 180 is carried over "into line'with a plunger 187. This plunger pro- 7 ]ects.through the casing and 1S adaptcdto be easily removed to facilitate packingon the removal:- of the casing." "A horizontal plate 188 reaches across the mach-ine 'serv-ing as a supporting means 'forthe springs 175,

spring 189. The: plate188 is pivoted in the and being itself under the-tension of a side plates of the machine, and has at'each end an extension l-adapted to enter a"- notchf191 on each side.of the'printing plun ger'187 The plunger 187 has also slits 192 which take over the {mutilated gears" 134, permitting the plunger to descend with out interference with those parts The plunger has also a'slitrl93 of larger siie toreceivetheendof a-cu'rvedarm 191 which.

extends downwardly :fronr the plate :188.

There may he, obv ously, an arm on each.

side, if desiredi'. When the p un r187is'insertedz-through the opening-int e topofthe casing the curved arm 194enters the slit 193 and depressesthe plate 188, causing'the extensions j 190 toenter the notches 191, .thus .making the plunger a' .s pring pressed plunger so that it may be returned after. being struck. When the printing plunger is struck by the hand of the operatonits lower end enters 3 thecrotch 180 andcarries downthe lever -179 and therebyforoes down the impression mechanism, that is, in the illustrated example, the printing lever 172 to printing position.

In case any of the counterwheels are not rotated, but addition takes place by the operation of the counter of a higher denomination or in the column above the correspond .ing wheel 90 will not rotate to bring the pin. 186 against the projection'181 of the settinglever 178 which forces down the printing lever 172. The controlling'imechanism of the counter'wheels is, however, as pr'eviously stated,. closely related to the controlling mechanism of the printing-levers.

Each coupling lever is in reality pivoted in and carried by the head of a lever arm 195 itself pivoted at 19.6 and having an arcshaped head turning for guidance in a corresponding slot of a bushing 197. Each lever 195 has a long arm 198 with a rounded head which lies immediately underneath the hooked portion of the corresponding settinglever 178. If the carriage 107 should be --I noved pastsome of the counter-wheels, say

cam-lever 99 will have its projecting arm,

depressed and its slotted head raised, drawing over the corresponding coupling-wheel and'tilting also the corresponding lever 195, so that its arm 198,. will rise and push over the corresponding hooked portion of the setting-lev-er 17 8. This movement locks the cam-lever and thelever 198 and, incidentally, all of theparts are locked at the other end by the setting-lever catching beneath the bottom of the springs, 183. The base of the machine is cut away at this pait as shown at 199. Into the opening is set a comparatively thin plate 199, the plate being providedwith lugs 201 which fit under lugs 202 secured to the base plate of the machine. The plate 200 has also an opening 203 and over that opening is fitted a grate 201 through the spaces of-which operate the embossed or figured portions of the printingwheel. A feeding spool 205 carries a ribbon 206 whichpasses over the opening 203 in the plate 200 and beneath the grate 201 and then upon a receiving or winding spool 207. The

' spool 205 has an extension 208 for winding,

and a friction washer 209. A similar washer is provided for the spool 207. The spool 207 base. ratchet wheel 210 which is engaged by a spring pawl 211 mounted on a projection 212 secured to one of the-printing-levers 172. Each movement of a printing-lever rotates the winding bObbll one step.

The operationso f the various features of the machine. have been described. It will, however, be advantageous to recapitulate them. .The machine is placed upon the book or paper containing the data. The. addition proceeds in the natural manner, that is,

by columns beginning with units. The key is struck, in accordance with the number to be added and each successive number is struck there being no necessity for keeping in mind anything but the single numeral indicating the key to be struck. As the keybar descends it carries down the outer edge of the corresponding plate 34, rocking the arm 39, 40 or 4:1 in accordance with which key-bar is struck. If, for example, the key.

pin 43 and because of the fact that the pin 44 lies against the head 51 of the slide-bar.

A similar but somewhat shorter movement is given the slidebar by the operation of another key-bar, say 5 which brings the pin .43 against the-rear wall of the slot 49; and a similar but still shorter movement may also be given by the operation of one of the upper key-bars, say 2 which bringsthe pin 44 against the head 51 ofthe slideivheel to the succeeding one.

bar 46 giving it. a slight rearward movement.

All of these measured movements give an downwardly bent parts 22, .23 .or 24 thus rocking a corresponding upwardly bent part 19, 20 or 21. When the ratchet and the gearring have made this movement, the pawl 71 catches and holds the ratchet and the at. tached gear in the advanced position until the release of the key bar permits the spring 47 to carry back the slide-bar, and with it on the return movement the sector-gear 53, reversing -the operation of the driving -r nechanism, the reverse movement being stopped by the pin 69 engaging the fixed stop-pin 70 on the standard 26.

The stop r0d25 has been placed in a po-.

sition exactly determine the rotary movement given the driving mechanism and therefore precisely determine the amount'of rotation to be given the pinion 79, the master-wheel'Bl, the center gear-wheels 83 and, therefore, the counter-wheels 85 and the printing-wheels 87.

The description has roceeded on the basis of beginning to add with the units counterwheel. However, in acase as, for example, where the units and tens columns are all zeros, the. addition may begin on the hundreds column. In such an event, or wherever it is desired to advance the masterwheel 82 and carriage 107, the fingerbar 133 is struck, depressing the end 130 of the rockdever 128 reciprocating the arm 127 and moving with it the rack-bar 122. The effeet is, through the pawl.113, to move the connected carriage 107 one step to the left, from one denomination to another, the parts being held in each advanced position by the pawl 114. which engages tlie fixed rackbar 121. The pointer .115 will indicate the chosen stopping place. Each movement, by means of the shifting arm 129, carries the master-wheel along from one center gear- At the same time with each movement or forward step the carriage 107 moves over a cam-lever 99 depressing it and through the described operation moves back the corresponding coupling-wheel 92 out of engagement with the counter-wheel which has been passed so that there may be no movement given that counter-wheel by the action of the counter-wheel of the next higher denomination which is being operated.

tron; Thisoperation jas'jndicated has given an equivalentxmovement' to each printingwheel for each movement of a corresponding counter-wheel. Necessarily the first mo\-ement .of the counter-wheel has a corresponding movement of the printing-wheel throp'gh the. center geanwheels 83. This firstf-inovement occasions the operation of the corresponding setting-lever 17 8 through the action ofthep in 186 upon the fulcrum projection 181 ofthe' corresponding setting lever-J Ih'case any-of the counting-wheels and p 'rinting-wheels should not be operated then, as: described,'the movement of the carriage 107 across the cam-levers 99 will set the corresponding levers 178. "That is done by the action of the slot 98 upon the pin of each coupling-wheel 92, the effect of the movement of the pinalong the cam-slot being to depressithe lever 195so' that its arm 198 will rise and push over the corresponding setting-lever 1'79. Each of the setting levers 179 in action is n ow caught beneath the'end of the Hat spring 175, locking them all in placeso that the crotches 180 are in positionto be engagedfby the bottomof the spring-pressedfplunger 187 when the plun ger is struck by thehand of the operator. The effect of this action is to operate the impression mechanism, that is, to force down each setting-lever 178 and each selected printing-lever in action 172, thus making an imprint or impression of the sum of the addition uponthe paper beneath the opening in the base of the machine which, if desired, may be the bopk or paper carrying the data which has been added by the machine. Incident to this operation are slight details which have been hitherto described, as for example the automatic action of the bobbin, etc, and the placing orreplacing of the spring-pressed plunger 18?. The printing having been done, the counterwheels and the printing wheels are now simultaneously run back to zero ready for another operation. This is accomplished throiigh the action of the finger-bar 162 which, ,iwhen depressed, carries down the frontend of the arm 159, throwing up the sector-gear 158, rotating the pinion 137, and through that action the shaft which carries the center gears 83., The mutilated gears 134 are provided so that whatever position of the parts these gears will pick up the the cam-face1-12 presses on the operating are missing and sweep the center gear Wheels Y 83 around carrying with them in a measured movement the counter-wheels and printing wheels, until the pins 170 catch in the notches 171 of the spring-pressed arms 172 mounted on the shaft 146. There is, howc\-'er,"a necessary initial-movement. As the disk 141 turns in the direction of the arrow arm of the bell-crank lever 145 'so thatthe curved arm of the bell-crank lever rises and swings the rock-arm 152 across the pro ection of the inside of thespring catch 155. The effect of the movement of the arm 152 is .to partially rotate the-shaft 100 and the tube orshaftcarrying the cam-levers 99. As previously described thislocksall the coupling-wheels, their wide teeth projecting between the rods 102,,103, permitting the counter-wheels, to turn without interfering. There is also incident'to these ,movements the release ofxthe setting-levers 178 from the spring-catches 183 so that the springs 182 may throw them back-to the position illustrated in Fig. '13. Just atthe end of the operation of returning to 'zero the sector-arm 169 operates the bar 165, A

carrying the bar 165 against the pawls 113, 114, releasing the carriage 107, permitting its spring to sweep the carriage over to the units side, the pin 118 striking the.spring-- stri p catch 155 and releasing the'member 151 of the bell-crank leveri-so that thesprings 162, 163 may, in an obvious manner, return the parts, incidentally again locking the carriage 107 through the pawls 113,114.

Iclaim:'-' w 1. In an adding machine, the combination of a series of counter-wheels and a corresponding series of printing wheels,- means for imparting synchronous rotation to the' two series of wheels, impression mechanism for the printing-wheels, and means for putting the impression mechanism into operable position upon the initial movement of any counter-wheel.

' 2. In an adding machine, the combination with a series of counter-wheels and a series of-printing-wheels, impression mechanism for each printing-Wheel, means for controlling the action of the counter-wheels operating also to bring into operableposition the impression mechanism corresponding to any unused counter-wheel of a lower denomination than any counter-wheel which has been operated. I 4

3. In an adding machine,.the combination of a series of counter-wheels, a series of printing-Wheels, means for controlling the operation of the printing-wheels, and means for automatically bringing the controlling mechanism of the printing-wheels intoop erative position as soon as the first/movement takes place in the units column of the counter-wheels.

4. In an adding machine, thecombination with key-bars,.coun-ter-wheels and printingwheels and their gears, of impression mechanism, setting-levers for the impression mechanism, and catches for holding the setting-levers in operative position.

5. In an adding machine, the combinationwith key-bars and counter-wheels 'andprint-' ing-wheels and their. gears, of, impression mechanism, setting-levers for-the impression mechanism, and. a spring-pressed'plunger for depressing the setting-levers and the impression mechanism.

6. An adding machine having in Scom- ,bination a series of actuating gears, a series of counter-wheels, and a series of. printing- 7. An adding \wheels meshing with the actuatin and means for vertically moving suc printing-wheels as are selected by the action of thegears. machine having in combination a series of actuating gears, a. series of counter-wheels, and a'series of printingwheels-.meshing with the actuating gears,

and means'forrvertically moving such printwheels meshing with the abtuatin onefor more of 'the ;printingwh s setting-lever.

ingwheels asarefiselectedby the actuating gears and also any intermediate printingwhe ls. 4

8. adding machine having in combination a' series of actuating gears, a series of counter-Wheels and a' series of printingvertically movable to print the totals.

erate the printing-wheels to cause them to' impress and controlling members for the impression means, of coupling-wheels and controlling means for the coupling-wheels, and an operative connection between,,the controlling-means of the coupling-wheels and the controlling members of the impres sion means.

12. In an ,adding machine, the combination of key-bars, counter-wheels and print- 9. Inan adding machine, thecombination of a series of totalizing counter-wheel's and a corresponding series of erticallv movable totalizing printing-wheels, means for iming-wheels and their gears, means to operate the printing-wheels to cause an impression,

setting-levers for the impression means, coupling-wheels controlling the inter-action of couples of the counter-wheels, each coupling-wheel carried by a lever in operative -relation with-a corresponding setting-lever. 13. In an. adding machine, the oombina' tion with a series of counter-wheels, of a series of coupling-wheels and means for causing any one of'the coupling-wheels to operate at a determined point two adjacent ooflntei -wheels' and means for returning to zero the counter-wheels comprising means for first moving all of the coupling-wheels out of the line of engagement with the counter-Wheels.

14.. In an adding machine, the combination of counter-wheels and their gears, con pling-wheels normally lying in engagement with counter-Wheels, a shaft carrying the cqfiipling-wheels, means. .for, rotating each counter-wheel to zeroand connecting means for initially throwing all of .the coupling-wheels outof engagement with the counter-wheels." I

15- In an-adding machine, the combination with counter-wheels'and corresponding coupling-wheels, mutilated gears secured to the counter-wheelsand corresponding mutilated driving-gearssecured to a shaft, apinion on. the end of the shaft, a sector-gear engaging thepinion; a cam on the end of the shaft,a lever operated by the cam and serving to shift the coupling-wheels, and a locking device for 'all the couplin -wheels.

. 16. In an adding'machine,-the combina-" tion of a series of. counter-wheels and a series of operating gears, of alshaft bearing a series of depending arms corresponding with the counter-wheels, pins on the opera ting gears adapted to take into notches on each corresponding arm, a pin connected with the shaft, and a recess to receive the pin to prevent a depending arm from springing bad out of engagement with the pin on the operating gear.

17. In an adding machine, the comhination of counter-wheels, corresponding roupling-wheels, a carriage, pawls for holding; the carriage in position, zermreturning gears and driving mechanism therefor, an operating lever for the driving mechanism. :1 bell-crank lever operating to more the coupling-wheels out of'engagement, a-'locl ingdevice for the coupling-wheels. and a lever arm connected with the operating lever and serving to release the carriage and permit it to release the locking device on the return of the grriage to the initial or unit position.

1e. In an adding machine, the combination with key-bars, counter-wheels and their gears, of coupling-Wheels for controlling the inter-action of couples of the counter wheels. each coupling-wheel carried by a pivoted arm and each having a cam-lever which looksthe coupling-wheel in either the operative or inoperative positions.

19. In an adding machine, the combination with counter-wheels and operating means, of a series of corresponding coupling-wheels, means for individually con'- trolling each coupling-wheel and means for 7 mo vin g them collectively.

with counter-wheels and operating means ineluding a carriage, of a series of coupling wheels, a series ofpivoted arms projecting into the path of the carriage, each arm having a cam-path serving to lock .a coupling wheel first in -one position and then in another position through the action of the carriage.

22. In an adding machine, the'combination of a series of counter-wheels and a series of coupling-wheels lying normally in position to engage the counter-wheels, a carriage to move out of engagement successive couplin -wheels, and means for moving all of the coupling-wheels out of engagement position preliminary to the zero-returning operation.

23; In an adding machine, the combination of a series' of counter-wheels, and a series of coupling-wheels,' each coupling-wheel carried by a pivoted arm and each arm in cluding a locking-device operating alternately to lock the coupling-wheel in the advanced and the retracted position with reference to the counter-wheels.

24. In an adding machine, the combination of counter-wheels, coupling-wheels, arms borne by a shaft and each carrying a coupling-wheel, each arm having a lockingdevice for each coupling-wheel, and means for'locking at once all of the couplingwheels.

25. In an adding machine, the combination of counter-wheels, coupling wheels, arms bearing the coupling-wheels and themselves borne by a shaft, each arm having a locking-device, a carriage comprising an op-- eratlng arm traveling over the coupling wheel arms and successivelylocking the coupling-wheels in retracted position. i

26. In an adding machine, the combination of counter-wheels and a corresponding series of coupling-wheels, a shaft on which the couplingwheels turn and to which they are tied by a spring connection, a carnage for successively turning the coupling-wheels on the shaft, and means for rotating the shaft and all the coupling-wheels.

27. In an adding machine, the combination of a series of counter-wheels and a series of coupling-wheels borne by a shaft, a bushing partly inclosing the shaft, each coupling-wheel having an extending cam-lever and a corresponding spring coiled about the shaft, one end bearing against the side of the bushing and the other end: against the cam-lever, so that when the cam-lever is pressed the several parts act as a unit and no spring-pressure is required to be overcome when all the coupling-wheels'are operated through the shaft.

' 28. In an adding machine, the combination of counter-wheels and their gears, a series of coupling-wheels, each coupling-wheel borne by a pivoted arm, a cam-lever operatively engaging each coupling-wheel and spring-pressed to keep its coupling-wheel movably against a corresponding counterwheel, a carriage movable across the camlevers and operating each to hold the 'corre- I spending coupling-Wheel out of operative position. r

29. In an addingmachine, the combination of counter-wheels and their gears, a series of coupling-wheels, each couplingwheel borne by a pivoted arm, a cam-lever operati'vely engaging each. coupling-wheel and spring-pressed to keep its couplingyvheel movably against a corresponding counter-wheel, a carriage movable across the cam-levers and operating'each to hold the.

replacing the coupling-wheels and withdrawing the locking devices, and means for then restoring the setting-levers to the initial or inoperative position.

31. In an adding machine, the combinathe coupling-wheels out of andinto engagtion with key-bars, countcr-wheels and their gears, of a driving gear for operating the counter gear, a slide-bar operating the driving gear, differential connections between the slide-bar and the keybars, and a series of stops operated by the key-bars to engage the drivmg gear.

32. In an adding machine, the combinacate the slide-bar difier'ent distances inacr' cordance with the impulse to be given .the rotating mechanism.

34. In combination with counter-wheels and gears for rotating the counter-wheels,-

a mutilated pinion to transmit an impulse tonthe gears, a sector-gear to impart the impulse, a slide-bar to which the sectorgear is fulcrunhd, and means for reciproeating the slide-bar different distances in accordance with the impulse to be imparted.

35. In an adding mach ine,.the combination with counter-wheels, of nine key-bars arranged in. transverse groups'of three, a slide-bar and means for converting its reciprocatory movement to a rotary movement to operate the counter-wheels, and three connections of different degrees of movement by which the three groups of key-bars operate the slide-bar. f

36. In an adding machine, the combination with key-bars, counter-wheels and their gears, of a driving gear for any of the counter-wheel gears, a sector-gear to operate the driving gear, a slide-bar to which the sectorgear is fulcrumed, and connections of varying extent of movement between sets of the key-bars and the slide-bar, and a stop for the driving gear operated by the keybar before impulse is given to the driving gear.

37. In an adding machine'the combination of.key-bars, counter-wheels and their gears, a driving-gear, a slide-bar operating the driving gear, and rocking plates having arms of different lengths connecting with' the slide-bar and operated by the key-bars.

38. In an adding machine, the combina meshing with the pinion, a slide-bar pivoted to the sector-gear, and rocking-levers operating the slide-bar and operated by the key-bars.

39. In a machine comprising counterwheels and a driving-gear mechanism, a pinion engaging the driving gear, .mechanism for oscillating the pinion, a ratchetand-pawl mechanism for controlling the movement of the pinion, ;a series of keybars and a corresponding series of stoprods, standards having a series of perforations to -guide the several stop-rods arranged with reference to the numerals on the counting wheels, the stop-rods operating through the perforations and across the projected path of the pawl.

40. In an adding machine, the combination with key-bars, counter-wheels and their gears, of a driving gear for any of the counter-gears comprising a ratchet-disk bearing at its periphery a gear-ring and on its shaft a pinion, a series of stops operated by the key-bars to engage. the ratchet-disk and a variably driven power-transmitting device between the key-bars and the pinion.

41. In an adding machine, comprising counter-wheels and driving gears, the combination with a slide-bar to impart motion to the driving-gears, of a pivoted plate and rocker-arms on. the plate to operate the slide-bar, the plate having perforationsat theedge, and key-bars engaging the plates between the perforations and the edge of the plate.

42. In an adding machine, the combination with key-bars, counter-wheels andtheir gears, of means for converting power derived from any of the key-bars intorotary movement 'to be imparted to any counterwheel, comprising. a shaft, a pinion on the shaft, a pawl carried by the pinion, a diskratchet engaged by the pawl of the pinion, aegear-wheel carried by the ratchet, a stop operated by the key-bar against which the pawl of the pinion strikes, a pawl holding the ratchet against retrograde movement, and a stop for the pinion.

In testimonyv whereof I have hereunto signed my name in the presence of two subscribing witnesses.

' LEVI W..YAGGY. Witnesses:

WILLIA 'FERGUSON, TIMOTHY DALY,

Copies of this patent may be obtained for the cents each. by addressing the Commissioner of Patents, Washington, D. 0. 

